tailieunhanh - Data Acquisition Part 10

Tham khảo tài liệu 'data acquisition part 10', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Microcontroller-based Biopotential Data Acquisition Systems Practical Design Considerations 261 Results and discussion Apart from the value that the ECG-ITM04 can have for diagnostic it provides a unique opportunity to gather ECG information of the regional population for the purposes of statistical analysis and establishing public health policies. The value of an extensive database such as the MIT Arrhythmia Database has been widely recognized Moody Mark 2001 and helped in the development of automatic arrhythmia recognition software. Therefore the authors consider that distribution of the ECG-ITM04 amongst the regional public health clinics can be an important step towards developing an ECG database. 6. Conclusions and future work The design of portable data acquisition systems is a multidisciplinary task that involves many areas of knowledge. It is important that the finished equipment includes all the necessary features to ensure easy operation. When it comes to biomedical equipment it is essential to ensure patient safety. The proposed general data acquisition scheme can be used with minimal modifications to perform different biopotential measurements. For instance the EEG-ITM04 does not include the SD memory interface because the results are stored in the microcontroller main memory reducing the power consumption and processor computational time to perform signal processing operations. In contrast at present The ECG-IMT04 requires a mass storage device to record the cardiac signals over a large period of time. Moreover differences are filter cut frequency and sample rate. Fixed analogue filter cut-frequencies are implemented instead of gain-programmable filters to save power and printed circuit board space. The designs presented in this work perform according to the specifications stated by the end user. However the availability of analogue front ends such as the ADS1298 from Texas Instruments and the ADuC842 from analog Devices and powerful low-power .

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